Unit 159 could refer to various contexts depending on the field. In military terms, it might denote a specific squad or unit designation. In education, it could refer to a particular module or course unit. Without additional context, it's difficult to provide a precise meaning.
one unit is
The answer will depend on what aspect the 21 units refer to!
Square unit
A unit ratio.
Well, in the metric system, the base unit for distance is the meter. If that is the unit to which you refer, then there are 1000 milimeters in one "unit", or meter.
eurasia
A cylinder can refer to a grain silo or a tiny pellet. A reasonable unit for one will not be reasonable for the other!
What sort of objects does this refer to?
The unit for energy is the joule. That's also the unit for work and for heat - both of which refer to energy transfers.
The acronym EBU is most often used to refer to the European Broadcasting Union. It may also be used to refer to an equivalent billing unit or an electronics bay unit.
18th infantry
Unit 159 could refer to various contexts depending on the field. In military terms, it might denote a specific squad or unit designation. In education, it could refer to a particular module or course unit. Without additional context, it's difficult to provide a precise meaning.
In Greek, "gram" (γραμμή) means "line" or "stroke." It can also refer to a unit of measurement equal to one thousandth of a kilogram.
15 units of wheat are given up to get one more unit of steel.
The area of one unit is one unit2. one unit * one unit = one unit2
If you refer to the unit, the international unit for energy is the joule; the symbol is "J".